David Renna

I am ready for an exciting semester.

Tuesday, July 6, 2010

Week 2: Spectral Bands Basics Challenge

Below are the 3 maps required for GIS 4035L/Remote Sensing and Photointerpretation for Summer term at UWF online. The first map shows a water feature which we were required to identify using the different spectral bands and their associated pixel values. The spike in the histogram for layer_4 between pixel values 12-18 are associated with the many water features in the image.
The second map we were required to determine from the histogram of Layer_5 and Layer_6, what sort of feature would likely cause a spike around pixel values 9-11. At first glance, I thought it was snow but after a little research I determined it was a glacier feature. The image we are looking at is within the state of Washington and around the Mt. Rainier area. This area is well known for its glaciers.
Finally, the third map we are required to identify a feature in the image of shallow water. I changed the image to better show the feature by using LandSat 5 TM Bathymetry Red: 3, Green: 2, Blue: 1. This enable me to easily identify the shallow water feature in the SW region toward the Pacific Ocean as an area where the feature was present.


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